Pad for caliper of disc brake

Abstract

The present invention relates to a pad for disc- brake calipers, comprising a plate for supporting a friction lining and having at least one seat which can engage a corresponding support pin suitable for supporting the pad in a caliper body, the support pin establishing a reaction to the frictional force exerted by a brake disc against the friction lining during a braking operation, wherein the at least one seat is formed at the bottom in a manner such that the pad is supported astride the support pin and that the point of abutment of the support pin in the seat is disposed to the rear of the centre of gravity of the pad during said braking operation.

What is claimed is:  
     
         1 . A pad for disc-brake calipers, comprising a plate for supporting a friction lining and having at least one seat which can engage a corresponding support pin suitable for supporting the pad in a caliper body, the support pin establishing a reaction to the frictional force exerted by a brake disc against the friction lining during a braking operation, in which the at least one seat is formed at the bottom in a manner such that the pad is supported astride the support pin and that the point of abutment of the support pin in the seat is disposed to the rear of the centre of gravity of the pad.  
     
     
         2 . A pad according to  claim 1  in which the seat has a semicircular profile in order to be positioned astride the support pin substantially precisely.  
     
     
         3 . A pad according to  claim 2  in which the point of abutment of the support pin in the seat is disposed in the quarter circle which is to the rear of the centre of gravity of the pad.  
     
     
         4 . A pad according to  claim 1  in which the seat has a substantially square profile defined by two opposed surfaces and a base.  
     
     
         5 . A pad according to  claim 4  in which the point of abutment between the support pin and the seat is represented by the point of contact between the support pin and the surface situated to the rear of the centre of gravity of the pad.  
     
     
         6 . A pad according to  claim 1  in which the seat has a substantially rectangular profile so as to receive the support pin to the rear of the centre of gravity of the pad.  
     
     
         7 . A pad according to  claim 1 , comprising two seats which are arranged symmetrically with respect to the axis of the pad, and of which solely the seat which is disposed to the rear of the centre of gravity of the pad houses the support pin.  
     
     
         8 . A pad according to  claim 7  in which the seats are positioned at the opposed lower corners of the pad.  
     
     
         9 . A pad according to  claim 7  in which the seats are defined at the lower corners of the pad by two arms which are connected to a body of the pad by means of respective elongate portions.  
     
     
         10 . A pad according to  claim 1 , comprising stop means which cooperate with corresponding opposed stop means provided on a caliper body in order to restrain the pad from moving in the direction of the rotation of a brake disc during a braking operation.  
     
     
         11 . A pad according to  claim 10  in which the stop means comprise projections which extend at the top of the pad.  
     
     
         12 . A pad according to  claim 1 , comprising at least one further seat positioned at the top of the pad and suitable for housing a reaction pin so as to form a point of abutment between the further seat and the reaction pin which is offset towards the disc entry relative to the centre of gravity of the pad.  
     
     
         13 . A pad according to  claim 12  in which the at least one further seat is defined by two protuberances.  
     
     
         14 . A pad according to  claim 12 , comprising a front seat for housing a front reaction pin and a rear seat for housing a rear reaction pin.  
     
     
         15 . A caliper body comprising opposed stop means suitable for cooperating with the stop means of the pad comprising stop means which cooperate with corresponding opposed stop means provided on a caliper body in order to restrain the pad from moving in the direction of the rotation of a brake disc during a braking operation.  
     
     
         16 . A caliper body comprising opposed stop means suitable for cooperating with the stop means of the pad comprising stop means which cooperate with corresponding opposed stop means provided on a caliper body in order to restrain the pad from moving in the direction of the rotation of a brake disc during a braking operation, wherein the stop means comprise projections which extend at the top of the pad.  
     
     
         17 . A disc-brake caliper comprising a pad comprising a plate for supporting a friction lining and having at least one seat which can engage a corresponding support pin suitable for supporting the pad in a caliper body, the support pin establishing a reaction to the frictional force exerted by a brake disc against the friction lining during a braking operation, in which the at least one seat is formed at the bottom in a manner such that the pad is supported astride the support pin and that the point of abutment of the support pin in the seat is disposed to the rear of the centre of gravity of the pad.